Kids' Choice Awards All-Stars!

Rihanna! Katy Perry! Jonas Brothers! See who blew kisses and who got slimed at Nickelodeon's big night in L.A.

GLEEK OUT

Glee costars Lea Michele and Cory Monteith step out together to present favorite TV actor, which went to Dylan Sprouse – who beat out his brother Cole and another set of siblings, Nick and Joe Jonas.